(8) باب الغسل وحكم الجنب
Narrated Abu Sa'id Al-Khudri (rad):
Allah's Messenger (ﷺ) said: "If one of you has sexual intercourse with his wife and wishes to repeat he should perform ablution between them" [Reported by Muslim].
Reference: Bulugh al-Maram 117
In-book reference: Book 1, Hadith 141
English translation: Book 1, Hadith 125